研究了时效温度和时间对Cu-0.3Cr-0.05Ti合金导电率的影响.结果表明:Cu-0.3Crm.05Ti合金在400℃×2h时效,可获得83％IACS的导电率,随着时效时间的延长,导电率变化趋于平缓.根据导电率与新相的转变量之间的关系计算出时效过程中新相的转变比率,利用马基申-富列明格规律和Avrami经验方程,推导出Cu-0.3Cr-0.05Ti合金在不同时效温度的析出动力学方程,并得到合金不同时效温度的等温转变曲线.
Effects of aging temperature and aging time on conductivity of the Cu-0.3Cr-0.05Ti alloy were investigated.The results show that the conductivity of Cu-0.3Cr-0.05Ti alloy is 83 ％ IACS after aging at 400 ℃ for 2 h.The conductivity changes tend to be gentle with the increasing of aging time.The transformation ratio of new phase in the aging process is calculated according to the relationship between the electrical conductivity and the quantity of the new phase.The precipitation kinetics equation of the Cu-0.3Cr-0.05Ti alloy at different aging temperatures is deduced from Matthiessen rule and Avrami experimental equation,the isothermal transformation curves of the alloy at different aging temperatures are obtained.
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